Metadata++

* added many FITS metadata
* added XMP-osgb
* DWG thumbnails
* NUT thumbnails
* reads XWMA
* writes to videos formats (ASF, FLV, MOV, MP4, NUT, QT, WMV...)
* INSV thumbnails + metadata
* RVT thumbnails
* added Motorola cameras
* made UserData writable
* added XMP-idimager
* added IFD4 and IFD5
* made CoppedImageWidth and CroppedImageHeight editable